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after a water change
an even smaller profile and
PSU – The newest type scale standard – Letters stand for Practical Salinity Units and is fast become the universal standard for seawater measurement
Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine ion concentration
Results are not affected by strontium and calcium interference
Shazam (priced per polyp) WYSIWYG after a water changeShazam Zoa Price is Per Polyp. Cut to order. Please allow a week to heal properly. WYSIWYG picture will be sent when ready.